android: Add a test for external VIEW intent without a URI.

This is a non-regression test for the linked bug.

BUG=742294

Change-Id: I749e223b831f7558b53039a14704625e52192a15
Reviewed-on: https://chromium-review.googlesource.com/576173
Commit-Queue: Benoit L <lizeb@chromium.org>
Reviewed-by: Ted Choc <tedchoc@chromium.org>
Cr-Commit-Position: refs/heads/master@{#488178}

chrome/android/javatests/src/org/chromium/chrome/browser/document/LauncherActivityTest.java

@@ -19,6 +19,7 @@ import org.chromium.base.ApplicationState;
 import org.chromium.base.ApplicationStatus;
 import org.chromium.base.test.util.RetryOnFailure;
 import org.chromium.chrome.browser.ChromeActivity;
+import org.chromium.chrome.browser.tab.Tab;
 import org.chromium.chrome.test.ChromeActivityTestCaseBase;
 import org.chromium.content.browser.test.util.Criteria;
 import org.chromium.content.browser.test.util.CriteriaHelper;
@@ -81,6 +82,24 @@ public class LauncherActivityTest extends ChromeActivityTestCaseBase<ChromeActiv
         assertEquals("Action was not preserved", intent.getAction(), activityIntent.getAction());
     }
 
+    @SmallTest
+    public void testDoesNotCrashWithNoUriInViewIntent() {
+        // Prepare intent
+        Intent intent = new Intent(Intent.ACTION_VIEW);
+        intent.setClassName(mContext.getPackageName(), ChromeLauncherActivity.class.getName());
+        intent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
+
+        // Could crash after the activity is created, wait for the tab to stop loading.
+        final ChromeActivity activity = (ChromeActivity) tryLaunchingChrome(intent);
+        CriteriaHelper.pollUiThread(new Criteria("ChromeActivity does not have a tab.") {
+            @Override
+            public boolean isSatisfied() {
+                Tab tab = activity.getActivityTab();
+                return tab != null && !tab.isLoading();
+            }
+        }, DEVICE_STARTUP_TIMEOUT_MS, CriteriaHelper.DEFAULT_POLLING_INTERVAL);
+    }
+
     private Activity tryLaunchingChrome(final Intent intent) {
         mContext.startActivity(intent);